<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Html</title>
</head>
<body onclick="console.log('I am body');">
  <button onclick="console.log('I am button');">
    <span onclick="console.log('I am span');">Span</span>
  </button>
  
</body>
<style>
  body {
    background-color: darkcyan;
  }
</style>
</html>